AC_DEFUN([LX_CHECK_COIN],

[

  AC_ARG_WITH([coin],

AS_HELP_STRING([--with-coin@<:@=PREFIX@:>@], [search for CLP under PREFIX or under the default search paths if PREFIX is not given @<:@default@:>@])

AS_HELP_STRING([--without-coin], [disable checking for CLP]),

              [], [with_coin=yes])

  AC_ARG_WITH([coin-includedir],

AS_HELP_STRING([--with-coin-includedir=DIR], [search for CLP headers in DIR]),

              [], [with_coin_includedir=no])

  AC_ARG_WITH([coin-libdir],

AS_HELP_STRING([--with-coin-libdir=DIR], [search for CLP libraries in DIR]),

              [], [with_coin_libdir=no])

  lx_clp_found=no

  if test x"$with_coin" != x"no"; then

    AC_MSG_CHECKING([for CLP])

    if test x"$with_coin_includedir" != x"no"; then

      CLP_CXXFLAGS="-I$with_coin_includedir"

    elif test x"$with_coin" != x"yes"; then

      CLP_CXXFLAGS="-I$with_coin/include"

    fi

    if test x"$with_coin_libdir" != x"no"; then

      CLP_LDFLAGS="-L$with_coin_libdir"

    elif test x"$with_coin" != x"yes"; then

      CLP_LDFLAGS="-L$with_coin/lib"

    fi

    CLP_LIBS="-lClp -lCoinUtils -lm"

    lx_save_cxxflags="$CXXFLAGS"

    lx_save_ldflags="$LDFLAGS"

    lx_save_libs="$LIBS"

    CXXFLAGS="$CLP_CXXFLAGS"

    LDFLAGS="$CLP_LDFLAGS"

    LIBS="$CLP_LIBS"

    lx_clp_test_prog='

      #include <coin/ClpModel.hpp>

      int main(int argc, char** argv)

      {

        ClpModel clp;

        return 0;

      }'

    AC_LANG_PUSH(C++)

    AC_LINK_IFELSE([$lx_clp_test_prog], [lx_clp_found=yes], [lx_clp_found=no])

    AC_LANG_POP(C++)

    CXXFLAGS="$lx_save_cxxflags"

    LDFLAGS="$lx_save_ldflags"

    LIBS="$lx_save_libs"

    if test x"$lx_clp_found" = x"yes"; then

      AC_DEFINE([LEMON_HAVE_CLP], [1], [Define to 1 if you have CLP.])

      lx_lp_found=yes

      AC_DEFINE([LEMON_HAVE_LP], [1], [Define to 1 if you have any LP solver.])

      AC_MSG_RESULT([yes])

    else

      CLP_CXXFLAGS=""

      CLP_LDFLAGS=""

      CLP_LIBS=""

      AC_MSG_RESULT([no])

    fi

  fi

  CLP_LIBS="$CLP_LDFLAGS $CLP_LIBS"

  AC_SUBST(CLP_CXXFLAGS)

  AC_SUBST(CLP_LIBS)

  AM_CONDITIONAL([HAVE_CLP], [test x"$lx_clp_found" = x"yes"])

  lx_cbc_found=no

  if test x"$lx_clp_found" = x"yes"; then

    if test x"$with_coin" != x"no"; then

      AC_MSG_CHECKING([for CBC])

      if test x"$with_coin_includedir" != x"no"; then

        CBC_CXXFLAGS="-I$with_coin_includedir"

      elif test x"$with_coin" != x"yes"; then

        CBC_CXXFLAGS="-I$with_coin/include"

      fi

      if test x"$with_coin_libdir" != x"no"; then

        CBC_LDFLAGS="-L$with_coin_libdir"

      elif test x"$with_coin" != x"yes"; then

        CBC_LDFLAGS="-L$with_coin/lib"

      fi

      CBC_LIBS="-lOsi -lCbc -lOsiCbc -lCbcSolver -lClp -lOsiClp -lCoinUtils -lVol -lOsiVol -lCgl -lm -llapack -lblas"

      lx_save_cxxflags="$CXXFLAGS"

      lx_save_ldflags="$LDFLAGS"

      lx_save_libs="$LIBS"

      CXXFLAGS="$CBC_CXXFLAGS"

      LDFLAGS="$CBC_LDFLAGS"

      LIBS="$CBC_LIBS"

      lx_cbc_test_prog='

        #include <coin/CbcModel.hpp>

        int main(int argc, char** argv)

        {

          CbcModel cbc;

          return 0;

        }'

      AC_LANG_PUSH(C++)

      AC_LINK_IFELSE([$lx_cbc_test_prog], [lx_cbc_found=yes], [lx_cbc_found=no])

      AC_LANG_POP(C++)

      CXXFLAGS="$lx_save_cxxflags"

      LDFLAGS="$lx_save_ldflags"

      LIBS="$lx_save_libs"

      if test x"$lx_cbc_found" = x"yes"; then

        AC_DEFINE([LEMON_HAVE_CBC], [1], [Define to 1 if you have CBC.])

        lx_lp_found=yes

        AC_DEFINE([LEMON_HAVE_LP], [1], [Define to 1 if you have any LP solver.])

        lx_mip_found=yes

        AC_DEFINE([LEMON_HAVE_MIP], [1], [Define to 1 if you have any MIP solver.])

        AC_MSG_RESULT([yes])

      else

        CBC_CXXFLAGS=""

        CBC_LDFLAGS=""

        CBC_LIBS=""

        AC_MSG_RESULT([no])

      fi

    fi

  fi

  CBC_LIBS="$CBC_LDFLAGS $CBC_LIBS"

  AC_SUBST(CBC_CXXFLAGS)

  AC_SUBST(CBC_LIBS)

  AM_CONDITIONAL([HAVE_CBC], [test x"$lx_cbc_found" = x"yes"])

])